The exact path with dconf or gsettings is org/gnome/shell/extensions/icon-hider.
use dconf or gsettings from command-line or the dconf Editor GUI application to tweak these schemas to apply various effects/functionalities provided by the extension
There are 3 keys there, uninstall icon hider, then delete these 3 keys and reinstall. It will clean up the list.
https://askubuntu.com/questions/1069761/gnome-3-extension-icon-hider-setting-location
The exact path with dconf or gsettings is org/gnome/shell/extensions/icon-hider.
use dconf or gsettings from command-line or the dconf Editor GUI application to tweak these schemas to apply various effects/functionalities provided by the extension
There are 3 keys there, uninstall icon hider, then delete these 3 keys and reinstall. It will clean up the list.